Inkjet Printed Textile Force Sensitive Resistors for Wearable and Healthcare Devices.
Inkjet Printed Textile Force Sensitive Resistors for Wearable and Healthcare Devices.
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DOI：
10.1002/adhm.202100893
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发表时间：
2021-10
影响因子：
10
通讯作者：
Jur JS
中科院分区：
文献类型：
--
作者：
Ju B;Kim I;Li BM;Knowles CG;Mills A;Grace L;Jur JS
用于可穿戴医疗保健设备的压力传感器，特别是力敏电阻器（FSR），广泛用于监测生理信号和人体运动。然而，目前的FSR不适合集成到可穿戴平台中，并且处理起来很昂贵。这项工作提出了一种新的技术，用于开发纺织力敏电阻器（TFSRs），使用喷墨印刷的金属有机分解银油墨和热压的组合，以方便集成到纺织品。TSFR结构由夹在两个具有喷墨印刷电极的非织造织物之间的热塑性聚氨酯（TPU）膜组成。顶部电极和底部电极之间的绝缘空隙产生了结构化的压阻结构。该结构用作简单的逻辑开关，其中在阈值压力下，电极接触以创建导电路径（接通状态），并且在没有压力的情况下返回到先前的绝缘状态（断开状态）。TFSR可以通过安排TPU间隔物的层数和孔径来控制，以指定从4.9 kPa到7.1 MPa的宽范围的活化压力。对于可穿戴医疗保健技术中的用例场景，与读出电路和移动的应用程序连接的TFSR显示出从手指移动中获得的高度稳定的信号。根据不同重量的LED灯泡的TFSR的开/关状态，它可以被用作显示触觉反馈的纺织开关。当与物理设备或物体集成时，传感器设计具有很高的潜力，用于记录触觉交互，作为量化健康相关行为的手段，例如药物依从性或自我监测设备的使用。
Pressure sensors for wearable healthcare devices, particularly force sensitive resistors (FSRs) are widely used to monitor physiological signals and human motions. However, current FSRs are not suitable for integration into wearable platforms and are expensive to process. This work presents a novel technique for developing textile force sensitive resistors (TFSRs) using a combination of inkjet printing of metal-organic decomposition silver inks and heat pressing for facile integration into textiles. The TSFR structure consists of a thermoplastic polyurethane (TPU) membrane sandwiched between two nonwoven textiles with inkjet printed electrodes. The insulating void between the top and bottom electrodes creates an architectured piezoresistive structure. The structure functions as a simple logic switch where under a threshold pressure the electrodes make contact to create conductive paths (on-state) and without pressure returns to the prior insulated condition (off-state). The TFSR can be controlled by arranging the number of layers and hole diameters of the TPU spacer to specify a wide range of activation pressures from 4.9 kPa to 7.1 MPa. For a use-case scenario in wearable healthcare technologies, the TFSR connected with a readout circuit and a mobile app shows highly stable signal acquisition from finger movement. According to the on/off state of the TFSR with LED bulbs by different weights, it can be utilized as a textile switch showing tactile feedback. When integrated with a physical device or object, the sensor design has a high potential for registering tactile interaction as a means to quantify health-related behaviors such as medication adherence or use of a self-monitoring device.
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影响因子：
10
作者：
Kim, Joshua;Chou, En-Fan;Khine, Michelle
通讯作者：
Khine, Michelle
影响因子：
4.3
作者：
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通讯作者：
Jur, Jesse S.
DOI：
10.3390/s17010130
发表时间：
2017-01-12
期刊：
Sensors (Basel, Switzerland)
影响因子：
--
作者：
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通讯作者：
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影响因子：
16.6
作者：
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通讯作者：
Mercier PP
影响因子：
29.4
作者：
Lee, Jaehong;Kwon, Hyukho;Lee, Taeyoon
通讯作者：
Lee, Taeyoon